Self-cleaning pyrolytic ovens reduce food soiling to ash with exposure to temperature around 932 °F (500 °C).
To prevent possible burn injuries, a mechanical interlock is used to keep the oven door locked and closed during and immediately after the high-temperature cleaning cycle, which lasts approximately three hours.
[4] Catalytic "continuous clean" ovens rely on high-metal porous enamels to catalyze the reduction of oils to ash at normal cooking temperatures.
Other possibilities are copper, vanadium, bismuth, molybdenum, manganese, iron, nickel, tin, niobium, chromium, tungsten, rhenium, platinum, cobalt, and their oxides, either alone or in mixtures.
[5] In the 1990s, SRI International performed a study for Whirlpool Corporation, and changed the composition and application of the porcelain enamel surface found in ovens to one with low ionic content, and a film that makes fat into water-soluble esters.